Add BitcoinApplication & RPCConsole tests

Add test coverage for Qt initialization code & basic RPC console functionality.

src/qt/bitcoin.h

@@ -71,6 +71,8 @@ public:
     void createWindow(const NetworkStyle *networkStyle);
     /// Create splash screen
     void createSplashScreen(const NetworkStyle *networkStyle);
+    /// Basic initialization, before starting initialization/shutdown thread. Return true on success.
+    bool baseInitialize();
 
     /// Request core initialization
     void requestInitialize();
@@ -99,6 +101,7 @@ Q_SIGNALS:
     void requestedShutdown();
     void stopThread();
     void splashFinished();
+    void windowShown(BitcoinGUI* window);
 
 private:
     QThread *coreThread;
@@ -119,4 +122,6 @@ private:
     void startThread();
 };
 
+int GuiMain(int argc, char* argv[]);
+
 #endif // BITCOIN_QT_BITCOIN_H